26o 



NATURE 



[May 29, 1919 



Rosenblatt : The comparative toxic action of some 

 volatile substances upon various insects. The compara- 

 tive effects of the vapours of ether, chloroform, carbon 

 bisulphide, carbon tetrachloride, monochloroacetone, 

 benzyl bromide, chloropicrin, and prussic acid upon 

 the larvae of Bombix neustria have been studied. 

 Chloropicrin proved to be the most toxic. 



BOOKS RECEIVED. 



Dr. John Fothergill and his Friends : Chapters in 

 Eighteenth-century Life. By Dr. R. H. Fox. Pp. 

 xxiv+434. (London : Macmillan and Co., Ltd.) 21.9. 

 net. 



The Geographical Part of the Nuzhat-al-Qulub. 

 Composed by Hamd-Allah Mustawfl of Qazwln in 

 740 (1340). Translated by G. Le Strange. " E. F. W. 

 Gibb Memorial " Series. Vol. xxiii.. No. 2. Pp. xix+ 

 322. (Levden : E. |. Brill; London: Luzac and Co.) 

 Ss. 



L'Origine des Formes de la Terre et dcs Planetes. 

 By E. Belot. Pp. xii + 213 + iii plates. (Paris: 

 Gauthier-Villars et Cie.) 14.40 francs net. 



The Intuitive Basis of Knowledge : An Epistemo- 

 logical Inquiry. By Prof. N. O. Lossky. Translated 

 by N. A. Duddington. Pp. xxix + 420. (London : 

 Macmillan and Co., Ltd.) 165. net. 



Industrial Chemistry. By Dr. C. Ranken. Pp. 

 126. (London and Edinburgh : T. C. and E. C. 

 Jack, Ltd., and T. Nelson and Sons, Ltd.) i.v. 3d. 



A Geography of America. By T. Alford Smith. 

 Pp. x + 329. (London : Macmillan and Co., Ltd.) 

 4s. 6d. 



A Vision of the Possible : What the R.A.M.C. 

 Might Become. By Sir J. W. Barrett. Pp. xx + 182. 

 (London : H. K. Lewis and Co., Ltd.) 



Elements of Graphic Dynamics. By E. S. Andrews. 

 Pp. viii+192. (London: Chapman and Hall, Ltd.) 

 105. 6d. net. 



Animal Life and Human Progress. Edited by Prof. 

 A. Dendv. Pp. ix+227. (London : Constable and 

 Co., Ltd.) los. 6d. net. 



The P<^ople's Health. Bv W. M. -Coleman. 

 Reprint. Pp. xi + 370. (New York: The Macmillan 

 Co.; London: Macmillan and Co., Ltd.) 35. 6d. net. 



Productive Agriculture. Bv Prof. J. H. Gehrs. 

 Pp. xii + 436. (New York:' The Macmillan Co.; 

 London: Macmillan and Co., Ltd.) 5s. 6d. net. 



Manual of Lip-reading. Bv Marv E. B. Stormonth 

 (Mrs. F. H. Mann). Pp. ix + 208". (London: Con- 

 stable and Co., Ltd.) 55. net. 



The Essentials of English Teaching. Bv Members 

 of the English Association. Pp. n. '(London: 

 Longmans and Co.) is. 



The Peace Conference Atlas. Maps 24. (London : 

 E. Stanford, Ltd.) 5s. 



DIARY OF SOCIETIES. 



-Annual General 



THURSDAY, May 29. 



IXSTITUTION OF El.EClRICAI. ENGINEERS, at 2 



Meeting. 



RovAL Institution, at 3.— Sir Valentine Chirol : The Balkans. 

 Royal Society, at 4.30.— Croonian Lecture— Dr. H. H. Dale : The 



Biological Significance of Anaphylaxis. 

 RoYAi, Aeronautical Society, at 8. — Squadron-Commander G. M. 



Djott : Flying in South America. 



FRIDAY, May 30. 

 Royal Institution, at s-So.-Sir John R. Bradford: A " Filter-passing" 



Vitus in Certain Diseas.-s. 

 In.stitution op Mechanical Engineers, at 6.— Discu.^sion resumed by 



Pr. W. Rosenhain on Paper by Dr. W. H. Hatfield: The Mechanical 



Properties of Steel, with .some consideration of the Question of Brittleness 

 Illuminating Enginfkring Society, at 8.— F. W. Willco.v : The Gas- 



filled Lamp and its tffect on Illuminating Engineering. 



NO. 2587, VOL. 103] 



SATURDAY, May 31. 

 British Psychological Society, at 3.30.— F. E. Bartlett and Miss E. M. 

 Smith : Listening to Sounds of Minimal Intensity.— E. BuUough : The- 

 Relations of .(Esthetics to P.sychology. 



MONDAY, June 2. 

 Victoria Institute, at 4.30.— E. Walter Maunder: The Mosaic 

 ^ Calendar as a Means of Dating appro.ximately certain Ancient Writings. 

 Society op Engineers, at 5.30. — A. Stewart Buckle : Re-settlement of 



Officers in Civil Life. — T. J. Gueritte : The Unknown Versailles. 

 Aristotelian Society, at 8.— Very Rev. Dean W. R. Inge : Platonism 



and Human Immortality. 

 Society of Chemical Industry, at 8.— Informal Meeting. 



TUESDAY, June 3. 

 Royal Institution, at 3.— Prof. W. H. Bragg : Listening under Water. 



WEDNESDAY, June 4. 



Geological Society, at 5.30.— A. Smith Woodward: The Dentition of 

 the Petalodont Shark, Clima.vodus.- F. Debenham : A New Theory of 

 Transportation by Ice : the Raised Marine Muds of South Victoria Land 

 (Antarctica). 



THURSDAY, Ju.m: 5. 



Royal Institution, at 3.— Sir Valentine Chirol : The Balkans. 



Royal Society of Arts, at 4.30.— Lord Montagu of Beaulieu: Aviation 

 as Affecting India. 



Chemical Society, at 8.— W. H. Perkin : Cryptopine. Part II.— P. 

 Black nan : An Isotonic (Isosmotic) Apparatus for comparing Molecular 

 Weight.s. Part I.— V. Cofman : The "Active Substance " in the lodina- 

 tion of Phenols.— N. V. Sidgwick : The Influence of Orfentation on the 

 Boiling-points of Isomeric Benzene Derivatives. — J. Senior : The Atomic 

 Weight of Iodine, and the Discovery of a New Halogen. — H. Hepworth : 

 The Absorption Spectra of the Nitric Esters of Glycerol. 



FRIDAY, June 6. 

 Royal Institution, at 5.30.— Sir E. Rutherford : 

 their Collisions with Light Atomi. 



Atomic Projectiles and 



SA TURD A Y, 

 Royal Institution, at 3.— J. M. Price 



jrUNK 7. _ 



Ihe Italian Front 



CONTENTS. PAGE 



Natural Organic Colouring Matters. By G, T. M. . 241 



Education and Industry 241 



Essex Water Supply. By H. L 242 



Our Bookshelf 243 



Letters to the Editor :— 



The Canadian Government and ihe I'ropo.sed Hunting 

 of Caribou with Aeroplanes. — Dr. C. Gordon 



Hewitt . . . 244 



X-Rays and British Industry.— R. S. Wright; 



Major G. W. C. Kaye 244 



Wasps. — Dr. James Ritchie; Richard F. Burton 245 

 The National Research Council of the United 



States. By Dr. C. G. L. Wolf . . 245 



W^ater-power Developments. By Dr. Brysson 



Cunningham ... 246 



Chemical Science and the State 247 



Notes . 248 



Our Astronomical Column : — 



The Solar Eclipse 252 



June Meteors . 252 



Paris Observatory Reports 252 



The Atlantic Flight 253 



Carnegie Libraries and Educational Welfare 253 

 Recent Researches on Cholera. By Lt. -Col. Sir 



Leonard Rogers, F. R.S 254 



University and Educational Intelligence 257 



Societies and Academies 258 



Books Received 260 



Diary of Societies 260 



Editorial and Publishing Offices : 



MACMILLAN AND CO., Ltd., 



ST. MARTIN'S STREET, LONDON, W.C.a. 



Advertisements and business letters to be addressed to the 



Publishers. 



Editorial Communications to the Editor. 

 Telegraphic Address : Phusis, London. 

 Telei>hone Number : Gerhard 8830. 



